Wearable device location systems architecture

ABSTRACT

Systems, methods, devices, computer readable media, and other various embodiments are described for location management processes in wearable electronic devices. Performance of such devices is improved with reduced time to first fix of location operations in conjunction with low-power operations. In one embodiment, low-power circuitry manages high-speed circuitry and location circuitry to provide location assistance data from the high-speed circuitry to the low-power circuitry automatically on initiation of location fix operations as the high-speed circuitry and location circuitry are booted from low-power states. In some embodiments, the high-speed circuitry is returned to a low-power state prior to completion of a location fix and after capture of content associated with initiation of the location fix. In some embodiments, high-speed circuitry is booted after completion of a location fix to update location data associated with content.

CLAIM FOR PRIORITY

This application is a continuation of and claims the benefit of priorityof U.S. patent application Ser. No. 16/778,265, filed Jan. 31, 2020,which is a continuation of and claims the benefit of priority of U.S.patent application Ser. No. 16/426,885, filed May 30, 2019, each ofwhich are hereby incorporated by reference in their entireties.

TECHNICAL FIELD

Embodiments of the present disclosure relate generally to mobilecomputing technology and wearable device technology and, moreparticularly, but not by way of limitation, to methods and devices withlocation services in power and computing resource limited environments.

BACKGROUND

Wearable devices such as glasses and watches come in many forms, buthave limited space for circuitry and power. Nevertheless, the formfactor and habitual use of wearable products provide benefits separatefrom targeted single function devices. Because of this, wearable devicessuch as wristbands, glasses, and other such devices with limited formfactors continue to include additional functionality. Even so, limits inspace and power resources drive continual innovation in the wearabledevice space.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

Various ones of the appended drawings merely illustrate exampleembodiments of the present disclosure and should not be considered aslimiting its scope.

FIG. 1 illustrates a wearable device for use in accordance with variousembodiments described herein.

FIG. 2 illustrates aspects of a wearable device, in accordance with someembodiments described herein.

FIG. 3 illustrates aspects of a system for wearable device operation, inconjunction with associated client devices and supporting systems, inaccordance with some embodiments.

FIG. 4 illustrates aspects of a wearable device, in accordance with someembodiments described herein.

FIG. 5 illustrates aspects of a wearable device, in accordance with someembodiments described herein.

FIG. 6 illustrates an example method, in accordance with someembodiments described herein.

FIG. 7 illustrates aspects of a wearable device location operations, inaccordance with some embodiments described herein.

FIG. 8 illustrates an example method, in accordance with someembodiments described herein.

FIG. 9 illustrates aspects of a wearable device location operations, inaccordance with some embodiments described herein.

FIG. 10 illustrates an example method, in accordance with someembodiments described herein.

FIG. 11 illustrates aspects of a communication environment for wearabledevice operation in conjunction with associated client devices andsupporting server computer systems, in accordance with some embodiments.

FIG. 12 is a block diagram illustrating an example of a softwarearchitecture that may be installed on a machine, according to someexample embodiments.

FIG. 13 illustrates a diagrammatic representation of a machine in theform of a computer system within which a set of instructions may beexecuted for causing the machine to perform any one or more of themethodologies discussed herein, according to some example embodiments.

DETAILED DESCRIPTION

Embodiments described herein relate to mobile computing technology andwearable health technology and, more particularly, but not by way oflimitation, to methods and devices for enabling location data forcontent generated using a wearable device with significant computingresource limitations (e.g. battery power).

For example, when a wearable device is used to generate images or videoclips, it is desirable to add context to this data with locationtagging. In order to effectively provide this location data, locationaware hardware is needed to provide a reasonably consistent set of datato the content generated at a wearable device. At the same time,wearable devices include significant limitations in terms of the spaceavailable to enable features such as location services. This isparticularly true for standard location services which may be configuredto constantly update a device location. Power limitations for wearabledevices, however, make constant location updates unfeasible. Embodimentsdescribed herein thus provide improvements to wearable devices byreducing resources needed to provide location data for content generatedby a wearable camera device. This improved device performance isprovided by a combination of efficient use of location circuitry, use ofsupporting data to reduce the time for an initial location fix, andmerging of location data from other sources in order to allow thelimited power efficient location data from a wearable device combinedwith data from other sources to provide consistent location data forimages and video clips.

In some embodiments, the operation of wearable devices is improved bythe use of a combination of high-speed circuitry, low-power circuitry,and location circuitry. The low-power circuitry manages the booting ofthe high-speed circuitry in the location circuitry in order to minimizethe power usage, since the high-speed circuitry and location circuitryconsume more power. Further, in order to minimize the power usage by thelocation circuitry, support data to reduce a time to first fix by thelocation circuitry is automatically communicated from the high-speedcircuitry to the location circuitry when the device initiates a locationfix. Low-power circuitry returns high-speed circuitry and locationcircuitry to low-power state whenever possible.

Additionally, rather than continually updating a location of a wearabledevice, location fix is only initiated when a trigger event occurs or ona periodic basis. For example, a location fix may be attempted every 15or 30 minutes when circuitry on the wearable device determines that thedevice is being worn. A worn state determination may be based onperipheral sensors, such as an inertial measurement unit or an ambientlight sensor. In some embodiments, a neural network operating onlow-power circuitry may implement a worn state determination usinginputs from such sensors. If the device is not being worn (e.g. notassociated with a worn state), no location fixes will be attempted.Low-power neural network circuitry may be part of low-power circuitry inorder to enable a determination of whether a device is being worn. Suchoperations may use simple motion data or light sensing data from sensorson a wearable device in order to make this determination. A triggerevent may be the receipt of an input to capture an image or video clip.Once such an input is received, the wearable device may initiatelocation fix. If the device is unable to determine location, a previousset of location data from a previous fix may be used for the captureddata. When the captured content is later downloaded to the client devicesuch as an associated cell phone, the client device may determine ifmore accurate location data is available from location data captured bythe client device. Location data associated with the content may then beupdated at the client device.

Various additional details and combinations of embodiments for improvingthe operation of wearable devices with location data generated withlow-power usage are described in detail below.

FIG. 1 illustrates aspects of an example embodiments of a wearableelectronic device implementing various disclosed embodiments, theelectronic device being in the example form of an article of eyewearconstituted by electronics-enabled glasses 31, which may further operatewithin a network system for communicating image and video content withassociated location information. FIG. 1 shows a front perspective viewof the glasses 31. The glasses 31 can include a frame 32 made from anysuitable material such as plastic or metal, including any suitable shapememory alloy. The frame 32 can have a front piece 33 that can include afirst or left lens, display, or optical element holder 36 and a secondor right lens, display, or optical element holder 37 connected by abridge 38. The front piece 33 additionally includes a left end portion41 and a right end portion 42. A first or left optical element 44 and asecond or right optical element 43 can be provided within respectiveleft and right optical element holders 36, 37. Each of the opticalelements 43, 44 can be a lens, a display, a display assembly, or acombination of the foregoing. In some embodiments, for example, theglasses 31 are provided with an integrated near-eye display mechanismthat enables, for example, display to the user of preview images forvisual media captured by cameras 69 of the glasses 31.

The frame 32 additionally includes a left arm or temple piece 46 and aright arm or temple piece 47 coupled to the respective left and rightend portions 41, 42 of the front piece 33 by any suitable means such asa hinge (not shown), so as to be coupled to the front piece 33, orrigidly or fixably secured to the front piece 33 so as to be integralwith the front piece 33. Each of the temple pieces 46 and 47 can includea first portion 51 that is coupled to the respective end portion 41 or42 of the front piece 33 and any suitable second portion 52, such as acurved or arcuate piece, for coupling to the ear of the user. In oneembodiment, the front piece 33 can be formed from a single piece ofmaterial, so as to have a unitary or integral construction. In oneembodiment, the entire frame 32 can be formed from a single piece ofmaterial so as to have a unitary or integral construction.

The glasses 31 can include a computing device, such as a computer 61,which can be of any suitable type so as to be carried by the frame 32and, in one embodiment, of a suitable size and shape, so as to be atleast partially disposed in one of the temple pieces 46 and 47. In oneembodiment, as illustrated in FIG. 16, the computer 61 has a size andshape similar to the size and shape of one of the temple pieces 46, 47and is thus disposed almost entirely if not entirely within thestructure and confines of such temple pieces 46 and 47. In oneembodiment, the computer 61 can be disposed in both of the temple pieces46, 47. The computer 61 can include one or more processors with memory,wireless communication circuitry, and a power source. The computer 61comprises low-power circuitry, high-speed circuitry, location circuitry,and a display processor. Various other embodiments may include theseelements in different configurations or integrated together in differentways. Additional details of aspects of the computer 61 may beimplemented as described with reference to the description that follows.

The computer 61 additionally includes a battery 62 or other suitableportable power supply. In one embodiment, the battery 62 is disposed inone of the temple pieces 46 or 47. In the glasses 31 shown in FIG. 1,the battery 62 is shown as being disposed in the left temple piece 46and electrically coupled using a connection 74 to the remainder of thecomputer 61 disposed in the right temple piece 47. One or more input andoutput devices can include a connector or port (not shown) suitable forcharging a battery 62 accessible from the outside of the frame 32, awireless receiver, transmitter, or transceiver (not shown), or acombination of such devices.

The glasses 31 include digital cameras 69. Although two cameras 69 aredepicted, other embodiments contemplate the use of a single oradditional (i.e., more than two) cameras 69. For ease of description,various features relating to the cameras 69 will further be describedwith reference to only a single camera 69, but it will be appreciatedthat these features can apply, in suitable embodiments, to both cameras69.

In various embodiments, the glasses 31 may include any number of inputsensors or peripheral devices in addition to the cameras 69. The frontpiece 33 is provided with an outward-facing, forward-facing, front, orouter surface 66 that faces forward or away from the user when theglasses 31 are mounted on the face of the user, and an oppositeinward-facing, rearward-facing, rear, or inner surface 67 that faces theface of the user when the glasses 31 are mounted on the face of theuser. Such sensors can include inward-facing video sensors or digitalimaging modules such as cameras 69 that can be mounted on or providedwithin the inner surface 67 of the front piece 33 or elsewhere on theframe 32 so as to be facing the user, and outward-facing video sensorsor digital imaging modules such as the cameras 69 that can be mounted onor provided with the outer surface 66 of the front piece 33 or elsewhereon the frame 32 so as to be facing away from the user. Such sensors,peripheral devices, or peripherals can additionally include biometricsensors, location sensors, accelerometers, or any other such sensors.

The glasses 31 further include an example embodiment of a camera controlmechanism or user input mechanism comprising a camera control buttonmounted on the frame 32 for haptic or manual engagement by the user. Thecamera control button provides a bi-modal or single-action mechanism inthat it is disposable by the user between only two conditions, namely anengaged condition and a disengaged condition. In this exampleembodiment, the camera control button is a pushbutton that is by defaultin the disengaged condition, being depressible by the user to dispose itto the engaged condition. Upon release of the depressed camera controlbutton, it automatically returns to the disengaged condition.

In other embodiments, the single-action input mechanism can instead beprovided by, for example, a touch-sensitive button comprising acapacitive sensor mounted on the frame 32 adjacent to its surface fordetecting the presence of a user's finger, to dispose thetouch-sensitive button to the engaged condition when the user touches afinger to the corresponding spot on the outer surface 66 of the frame32. It will be appreciated that the above-described camera controlbutton and capacitive touch button are but two examples of a hapticinput mechanism for single-action control of the camera 69, and thatother embodiments may employ different single-action haptic controlarrangements.

FIG. 2 is a schematic diagram illustrating some of the components of theexample electronic device in the form of the glasses 31. Note that acorresponding arrangement of interacting machine components can apply toembodiments in which an electronic device consistent with the disclosurecomprises, for example, a mobile electronic device such as a wearabledevice (e.g., the glasses 31), a smartphone, a tablet, or a digitalcamera. The computer 61 of the glasses 31 includes a central processor221 in communication with an onboard memory 226. The central processor221 may be a central processing unit and/or a graphics processing unit.The memory 226 in this example embodiment comprises a combination offlash memory and random-access memory. Device 31 of FIG. 2 furtherincludes GPS processor 256. While GPS processor 256 is referred to asglobal positioning system (GPS), any location system or globalnavigation satellite system (GNSS) support circuitry may be used invarious embodiments as part of the elements referred to herein as GPSsystems, location systems, location circuitry, location circuits,location or GPS processors 256, or other such terms. As describedherein, such devices are used to perform location operations or location“fix” operations to estimate a current location of a device. Further, a“time to first fix” refers to the time from initiating a locationoperation to generating associated location data. A successful locationfix results in a set of data associated with a location, though suchdata may have significant associated uncertainty. Various embodimentsdescribed herein may use tradeoffs of accuracy against power consumptionand a time to first fix to further reduce power usage of locationoperations in a wearable device. Further still, rather than continuinglocation operations when the circuitry is unable to determine alocation, embodiments herein may use a relatively low timeout thresholdto limit power usage when a wearable device is in an environment wherelocation data is unavailable or difficult to determine. Suchenvironments may occur in an indoor location or where obstructionsprevent the location circuitry from accessing relevant satelliteinformation. Rather than consuming power, a timeout (e.g. 30 seconds, 60seconds, two minutes) may be used to limit the resources spent inattempting to generate location data. Instead, embodiments herein maysimply provide a location fail or timeout response, and rely on aprevious location fix or location data from another device (e.g. apaired client or phone device) to provide location data. Alternativelyor additionally, device may prompt a user to input an estimated locationwhen location data is not available via the automatic (e.g. GNSS)location systems.

The glasses 31 further include a camera controller 214 in communicationwith the central processor 221 and the camera 69. The camera controller214 comprises circuitry configured to control recording of eitherphotographic content or video content based upon processing of controlsignals received from the single-action input mechanism (indicatedgenerally by a single-action input mechanism 235 in FIG. 2) thatincludes the camera control button, and to provide for automaticadjustment of one or more image-capture parameters pertaining tocapturing of image data by the camera 69 and on-board processing of theimage data prior to persistent storage thereof and/or to presentationthereof to the user for viewing or previewing.

In some embodiments, the camera controller 214 comprises permanentlyconfigured circuitry, such as firmware or an application-specificintegrated circuit (ASIC) configured to perform the various functionsdescribed herein. In other embodiments, the camera controller 214 maycomprise a dynamically reconfigurable processor executing instructionsthat temporarily configure the processor to execute the variousfunctions described herein.

The camera controller 214 interacts with the memory 226 to store,organize, and present image content in the form of photo content andvideo content. To this end, the memory 226, in this example embodiment,comprises a photo content memory 228 and a video content memory 242. Thecamera controller 214 is thus, in cooperation with the central processor221, configured to receive, from the camera 69, image datarepresentative of digital images captured by the camera 69 in accordancewith some of the image-capture parameters, to process the image data inaccordance with some of the image-capture parameters, and to store theprocessed image data in an appropriate one of the photo content memory228 and the video content memory 242.

The camera controller 214 is further configured to cooperate with adisplay controller 249 to cause display on a display mechanismincorporated in the glasses 31 of selected photos and videos in thememory 226, and thus to provide previews of captured photos and videos.In some embodiments, the camera controller 214 will manage processing ofimages captured using automatic bracketing parameters for inclusion in avideo file.

The single-action input mechanism 235 is communicatively coupled to thecentral processor 221 and the camera controller 214 to communicatesignals representative of a current state of the camera control button,and thereby to communicate to the camera controller 214 whether or notthe camera control button is currently being pressed. The cameracontroller 214 further communicates with the central processor 221regarding the input signals received from the single-action inputmechanism 235. In one embodiment, the camera controller 214 isconfigured to process input signals received via the single-action inputmechanism 235 to determine whether a particular user engagement with thecamera control button is to result in a recording of video content orphotographic content, and/or to dynamically adjust one or moreimage-capture parameters based on processing of the input signals. Forexample, pressing of the camera control button for longer than apredefined threshold duration causes the camera controller 214automatically to apply relatively less rigorous video processing tocaptured video content prior to persistent storage and display thereof.Conversely, pressing of the camera control button for shorter than thethreshold duration in such an embodiment causes the camera controller214 automatically to apply relatively more rigorous photo stabilizationprocessing to image data representative of one or more still images.

The glasses 31 may further include various components common to mobileelectronic devices such as smart glasses or smart phones, for exampleincluding a display controller 249 for controlling display of visualmedia (including photographic and video content captured by the camera69) on a display mechanism incorporated in the device. Note that theschematic diagram of FIG. 2 is not an exhaustive representation of allcomponents forming part of the glasses 31.

FIG. 3 illustrates an alternative network system 301 that may be usedwith certain embodiments. The network system 301 includes a messagingsystem 330 with interface modules 340, application logic modules 350,database servers 332, and databases 334, as well as client devices 310operating client applications 312. The network system 301, however,additionally includes wearable client companion devices 314 connected tothe client devices 310. In various embodiments, the wearable clientcompanion device 314 is configured for wired communication with eitherthe client device 310 or the messaging system 330. The client companiondevice 314 may also be simultaneously configured for wirelesscommunication with the client device 310, the messaging system 330, orboth. The client companion devices 314 may be wearable devices such asglasses 31, visors, watches, or other network-enabled items. The clientcompanion devices 314 may also be any device described herein thataccesses a network via another device such as the client device 310. Theclient companion devices 314 include image sensors 316, wireless inputand output (I/O) 317, and elements of a location system 360 (e.g., forassigning general capture area information to content captured usingclient companion device(s) 314). The client companion devices 314 mayinclude one or more processors, a display, a battery 62, and a memory,but may have limited processing and memory resources. In suchembodiments, the client device 310 and/or server computing devices usedfor the messaging system 330 may provide assistance with both improvedtime to first fix performance of location modules 360 operating ondevices 314, as well as supporting supplemental location information incase location information provided by devices 314 is not available or isless accurate than other available information from the associatedclient device 310. In one embodiment, for example, the client companiondevice 314 may be a pair of network-enabled glasses, such as the glasses31 of FIG. 1, and the client device 310 may be a smartphone that enablesaccess to the messaging system 330 to enable communication of videocontent captured with the image sensor(s) 316.

FIG. 4 is a block diagram illustrating a networked system 400 includingdetails of a camera device 410, according to some example embodiments.In certain embodiments, camera device 410 may be implemented in glasses31 of FIG. 1 described above.

System 400 includes camera device 410, client device 490, and serversystem 498. Client device 490 may be a smartphone, tablet, phablet,laptop computer, access point, or any other such device capable ofconnecting with camera device 410 using both a low-power wirelessconnection 425 and a high-speed wireless connection 437. Client device490 is connected to server system 498 and network 495. The network 495may include any combination of wired and wireless connections. Serversystem 498 may be one or more computing devices as part of a service ornetwork computing system.

System 400 may optionally include additional peripheral device elements419 and/or a display 411 integrated with camera device 410. Suchperipheral device elements 419 may include biometric sensors, additionalsensors, or display elements integrated with camera device 410. Examplesof peripheral device elements 419 are discussed further with respect toFIGS. 12 and 13. For example, peripheral device elements 419 may includemotion detectors, light detectors, any I/O components including outputcomponents, 1352 motion components 1358, or any other such elementsdescribed herein.

Camera device 410 includes camera 414, image processor 412, interface416, low-power circuitry 420, and high-speed circuitry 430. Camera 414includes digital camera elements such as a charge coupled device, alens, or any other light capturing elements that may be used to capturedata as part of camera 414.

Interface 416 refers to any source of a user command that is provided tocamera device 410. In one implementation, interface 416 is a physicalbutton on a camera 414 that, when depressed, sends a user input signalfrom interface 416 to low-power processor 422. A depression of such acamera button followed by an immediate release may be processed bylow-power processor 422 as a request to capture a single image. Adepression of such a camera button for a first period of time may beprocessed by low-power processor 422 as a request to capture video datawhile the button is depressed, and to cease video capture when thebutton is released, with the video captured while the button wasdepressed stored as a single video file. In certain embodiments, thelow-power processor 422 may have a threshold time period between thepress of a button and a release, such as 500 milliseconds or one second,below which the button press and release is processed as an imagerequest, and above which the button press and release is interpreted asa video request. The low-power processor 422 may make this determinationwhile the image processor 412 is booting. In other embodiments, theinterface 416 may be any mechanical switch or physical interface capableof accepting user inputs associated with a request for data from thecamera 414. In other embodiments, the interface 416 may have a softwarecomponent, or may be associated with a command received wirelessly fromanother source.

Image processor 412 includes circuitry to receive signals from thecamera 414 and process those signals from the camera 414 into a formatsuitable for storage in the memory 434. Image processor 412 isstructured within camera device 410 such that it may be powered on andbooted under the control of low-power circuitry 420. Image processor 412may additionally be powered down by low-power circuitry 420. Dependingon various power design elements associated with image processor 412,image processor 412 may still consume a small amount of power even whenit is in an off state. This power will, however, be negligible comparedto the power used by image processor 412 when it is in an on state, andwill also have a negligible impact on battery life. As described herein,device elements in an “off” state are still configured within a devicesuch that low-power processor 422 is able to power on and power down thedevices. A device that is referred to as “off” or “powered down” duringoperation of camera device 410 does not necessarily consume zero powerdue to leakage or other aspects of a system design.

In one example embodiment, image processor 412 comprises amicroprocessor integrated circuit (IC) customized for processing sensordata from camera 414, along with volatile memory used by themicroprocessor to operate. In order to reduce the amount of time thatimage processor 412 takes when powering on to processing data, anon-volatile read only memory (ROM) may be integrated on the IC withinstructions for operating or booting the image processor 412. This ROMmay be minimized to match a minimum size needed to provide basicfunctionality for gathering sensor data from camera 414, such that noextra functionality that would cause delays in boot time are present.The ROM may be configured with direct memory access (DMA) to thevolatile memory of the microprocessor of video processor 412. DMA allowsmemory-to-memory transfer of data from the ROM to system memory of thevideo processor 412 independently of operation of a main controller ofvideo processor 412. Providing DMA to this boot ROM further reduces theamount of time from power on of the image processor 412 until sensordata from the camera 414 can be processed and stored. In certainembodiments, minimal processing of the camera signal from the camera 414is performed by the image processor 412, and additional processing maybe performed by applications operating on the client device 490 orserver system 498.

Low-power circuitry 420 includes low-power processor 422 and low-powerwireless circuitry 424. These elements of low-power circuitry 420 may beimplemented as separate elements or may be implemented on a single IC aspart of a system on a single chip. Low-power processor 422 includeslogic for managing the other elements of the camera device 410. Asdescribed above, for example, low-power processor 422 may accept userinput signals from an interface 416. Low-power processor 422 may also beconfigured to receive input signals or instruction communications fromclient device 490 via low-power wireless connection 425. Additionaldetails related to such instructions are described further below.Low-power wireless circuitry 424 includes circuit elements forimplementing a low-power wireless communication system. Bluetooth™Smart, also known as Bluetooth™ low energy, is one standardimplementation of a low-power wireless communication system that may beused to implement low-power wireless circuitry 424. In otherembodiments, other low-power communication systems may be used.

Location circuitry 213 includes specialized processing circuitry forimplementing location services as described above. For example, locationcircuitry 213 may include a circuit for accessing GNSS or GPS data inconjunction with supporting information such as satellite almanac binarydata in order to generate positioning data for device 210 (e.g. glasses31) when such data is not available from a paired client device 490.

High-speed circuitry 430 includes high-speed processor 432, memory 434,and high-speed wireless circuitry 436. High-speed processor 432 may beany processor capable of managing high-speed communications andoperation of any general computing system needed for camera device 410.High-speed processor 432 includes processing resources needed formanaging high-speed data transfers on high-speed wireless connection 437using high-speed wireless circuitry 436. In certain embodiments, thehigh-speed processor 432 executes an operating system such as a LINUXoperating system or other such operating system such as operating system904 of FIG. 9. In addition to any other responsibilities, the high-speedprocessor 432 executing a software architecture for the camera device410 is used to manage data transfers with high-speed wireless circuitry436. In certain embodiments, high-speed wireless circuitry 436 isconfigured to implement Institute of Electrical and Electronic Engineers(IEEE) 802.11 communication standards, also referred to herein as Wi-Fi.In other embodiments, other high-speed communications standards may beimplemented by high-speed wireless circuitry 436. In some embodiments,high-speed circuitry 430 may be a system on a chip (SoC) circuitintegrated with various functions, which may include video processorfunctions described above, such that video processor 412 may beintegrated with high-speed circuitry 430. In the various embodimentsdescribed herein, low-power circuitry 220 and location circuitry 213 areseparate from high-speed circuitry 230, in that low-power circuitry 220,location circuitry 213, and high-speed circuitry 230 are separatelymanaged and each able to be placed in a low-power state independentlyfrom the other systems.

Memory 434 includes any storage device capable of storing camera datagenerated by the camera 414 and image processor 412. While memory 434 isshown as integrated with high-speed circuitry 430, in other embodiments,memory 434 may be an independent standalone element of the camera device410. In certain such embodiments, electrical routing lines may provide aconnection through a chip that includes the high-speed processor 432from the video processor 412 or low-power processor 422 to the memory434. In other embodiments, the high-speed processor 432 may manageaddressing of memory 434 such that the low-power processor 422 will bootthe high-speed processor 432 any time that a read or write operationinvolving memory 434 is needed.

FIG. 5 then illustrates an example system 500 with details on theinteractions between various system elements in accordance with someexample embodiments. In the embodiment of system 500, a wearable device,a client device 510, and a location support server 532 are illustrated.The wearable device comprises wearable device input/output (I/O) 514, ahigh-speed circuit 516, a low-power circuit 518, and a location circuit560. Such device elements may be similar to the corresponding elementsof camera device 410 discussed above, and may be used in any wearabledevice or client companion device 314 of any embodiment describedherein.

In some embodiments, operation of system 500 is improved by maximizingthe amount of time location circuit 560 spins in a low-power sleepstate. In some such embodiments, location circuit 560 has at least fourstates. The states include an off state, a low-power core sleep state,an attempting sleep state, and an acquiring state. The off state is anoperational setting with location circuit 560 completely powered off. Invarious embodiments, the state is only used when system 500 is in acritical (e.g. near zero) low power state. Booting from this power offstate requires additional resources and significantly lowers the time tofirst fix when location data is needed. The low-power state or sleepstate is an operational setting of a very low-power usage but whichallows location circuit 560 to maintain a real-time clock. Maintenanceof the real-time clock in the low-power state significantly increasesperformance of the time to first fix for location circuit 560 (e.g.lowers the time from initiation of the fix to acquisition of data).Because of the low-power usage and increased performance, system 500uses low-power state as the default state for location circuit 560. Anattempting sleep state or a transition to low-power state is used whenlocation data has been generated or when a timeout has occurred in theacquisition state. The acquisition state is a high power usage state oflocation circuit 560 which is used for generating location data for useby system 500. When location circuit 560 enters the acquisition state,the circuit wakes up from the low-power mode and begins attempting alocation fix. During this time, location circuit 560 will beginaccepting assistance data which helps reduce a time to first fix. Suchdata may, for example, include information about previous location, aswell as Almanack binary data associated with location satellites andlocation satellite information. If the device successfully acquireslocation, location parameters will be cached within system memory. Afterthe fix has been acquired and the location parameters cached, or timeouthas expired, location circuit 560 automatically enters the attemptingsleep state, and then returns to the sleep state (e.g. low-power state)as soon as possible to limit power usage.

In the context of the above states for location circuit 560, the overallsystem may work with the following flow, in some embodiments. Locationcircuit 560 remains in the low-power sleep mode until the wearabledevice triggers a location fix (e.g. from a periodic clock-based triggeror state trigger or from capture of an image or video clip). The clientdevice 510 will periodically grab assistance data from location supportserver 532. Location assistance data is stored in the memory associatedwith high-speed circuit 516, and will provide this information tolocation circuit 560 during location fix operations. During mediacapture operations, if the media is finished recording, four locationparameters are determined as part of location fix operations. The lastcached location parameters will be written as metadata for the capturedcontent. If location circuit 560 is able to get a location fix,high-speed circuit 516 will boot and will override previously assignedlocation parameters for the captured content.

As shown in FIG. 5, client device 510 periodically requests assistancedata from location support server 532 in operation 570. Location supportserver 532 response to client device 510 with any update information inoperation 572. This update information may include updates to satellitebinary data which enables improved time to first fix operations atlocation circuit 560. Client device 510 will then periodically checkwith the paired wearable device in operation 574, and if the wearabledevice does not have the current assistance data from location supportserver 532, client device 510 will provide this data to the wearabledevice via wearable device I/O 514 in operation 574.

The wearable device of system 500 may then be considered to havelocation manager operations distributed between low-power circuit 518,high-speed circuit 516, and location circuit 560. The core management ofthe location manager functionality is structured in low-power circuit518 which is configured for continuous operation unless the wearabledevice is a critical low power mode. The low-power circuit 518 managesoperations of other elements of the wearable device due to low-powerconsumption as part of the configuration of low-power circuit 518. Theseoperations may include simple neural network or state identificationfunctionality to determine when the wearable device is being worn, todetermine other such states of the wearable device which would impactthe operation of the location manager functionality. For example, whenlow-power circuit 518 performs operations which determine that thewearable device is in one state, the low-power circuit 518 may then usea clock trigger to initiate the location fix operation after a thresholdperiod of time since the previous location fix. Such operations mayinclude separate clocks for a previous successful fix in the previousfix attempt. For example, the low-power circuit 518 may initiate alocation fix operations 5 minutes after the last fix attempt if that fixattempt was unsuccessful, or 15 minutes after the last fix attempt ifthe fix attempt was successful. In other embodiments, low-power circuit518 simply performs a fix attempt at a fixed periodic time while thelocation manager determines that the device is being worn.

Low-power circuit 518 may also manage location manager functionality inresponse to inputs received at the wearable device. For example, when abutton press input 576 is received at wearable device I/O 514, thesignal may be conveyed to low-power circuit 518 in operation 578, and inresponse to this input 576, low-power circuit 518 manages a location fixoperation and instructs location circuit 560 to enter a locationacquisition mode in operation 586.

In some embodiments, input 576 via wearable device I/O 514 automaticallyboots high-speed circuit 516 via operation 580 and the boot operation ofhigh-speed circuitry 516 automatically initiates communication oflocation assistance binary data or other location assistance data fromhigh-speed circuit 516 to low-power circuit 518 in operation 582. Byautomatically initiating such communications in response to input thattriggers a location fix, the time to first fix is reduced. Whenlow-power circuit 518 initiates the fix and receives the assistancedata, the assistance data is forwarded to location circuit 560 inoperation 584. This assistance data is further used by location circuit560 to reduce the time to first fix. Location circuit 560 then performsoperations to determine location parameters for the wearable device.These operations may either result in a location fail 588, or a locationsuccess 590. After the location fail 588 occurs, an indication may becommunicated back to low-power circuit 518, and this information may beused in determining the timing of a subsequent location fix. In someembodiments, if content is being captured in association with thelocation fix operation, the content may be automatically assigned aprevious set of location parameters, and so a location fail 588 will notresult in any change to the location data associated with capturedcontent. If location success 590 occurs, the location parameters andvarious location data generated in this operation is propagated to anyrecently captured content by the high-speed circuit 516.

FIG. 6 illustrates an example method in accordance with some embodimentsdescribed herein. FIG. 6 particularly describes a method 600 for asystem to enable improved device performance for location management ina resource constrained environment, in accordance with some embodiments.In some embodiments, method 600 is performed by a wearable device suchas glasses 31 in order to provide location data associated with contentcaptured by a camera device 410 of the glasses 31. In some embodiments,method 600 is embodied in computer-readable instructions stored in anon-transitory storage of a device such as glasses 31, such that whenthe instructions are executed by one or more processors of a device, thedevice performs method 600.

Method 600 begins with operation 602 where a wearable device receives analmanac data binary from a location assistance server. Such data may bereceived via a paired client device 510 using I/O circuitry of thewearable device (e.g. Bluetooth™ low energy, Wifi direct, etc.). In someembodiments, a client device 510 queries the wearable device todetermine if an almanac data binary is up to date or has been updatedwithin a threshold time period (e.g. 24 hours, 2 days, 10 hours, etc.),and if the data is not up to date, the updated information is pushedfrom the client device 510 to the wearable device. In some embodiments,power settings are further queried as part of such an update process,such that the almanac data binary is only updated if the wearable deviceis above a threshold power level. In some embodiments, a messagingserver system, such as the system described in FIG. 1 and in otherembodiments described herein, further manages the almanac data binaryupdate. In other embodiments, a client device 510 receives the updatedata directly from a location assistance server.

When the wearable device receives updated almanac data binaryinformation, that information is stored in operation 604 in a memoryassociated with high-speed circuitry 430 of the wearable device. Then, astandard operating state of the wearable device in operation 606involves operating location circuitry 413 of the wearable device in alocation circuitry low-power state comprising a real-time clock andoperating the high-speed circuitry 430 of the wearable device in ahigh-speed circuitry low-power state. Operation 608 involves initiatinga location fix operation at the wearable device using low-powercircuitry 420 of the wearable device and then placing the low-powercircuitry 420 in a low-power circuitry idle-state for a remainingduration of the location fix operation. In various embodiments, thislocation fix operation may be initiated in response to an inputindicating capture of image or video data to be associated with locationdata, or a periodic update associated with a “worn” device statedetermined based on sensor data.

In response to initiation of the location fix operation, operation 610then involves transitioning the location circuitry 413 from thelow-power state to a normal state, booting the high-speed circuitry 430of the wearable device, and communicating the almanac data binary fromthe memory to the location circuitry 413 using the high-speed circuitry430. Operation 612 then generates using the location circuitry 413 aspart of the location fix operation, location state data, communicatesthe location state data to the high-speed circuitry 430 for storage inthe memory, and returns the high-speed circuitry 430 to the high-speedcircuitry low-power state.

Some such embodiments operate where the location fix operation isinitiated at the wearable device in response to receipt of an inputsignal at the low-power circuitry 420 from a camera control button ofthe wearable device. As part of some such operations, the location fixoperation may further be initiated at the wearable device in response toa determination that a previous input signal was not received at thelow-power circuitry 420 within a threshold period of time.

In some embodiments, the location state data is generated duringacquiring mode operations of the location circuitry 413 for a thresholdacquiring time period. In various systems, the threshold acquiring timeis configured to allow reasonable fix acquisition time without wastingpower if a fix is unlikely. Such periods may be based on an averageacquisition period dependent upon the location circuitry 413 In someembodiments, the period is between 45 seconds and 90 seconds. In someembodiments, the system tracks an average acquisition time, or anothervalue associated with location fix operations, and selects a thresholdacquiring time based on historical data. For example, a system may havea variable acquisition time with a maximum allowable time of 60 seconds,but may identify that 95% of successful location fix operations achievesuccess within a 30 second time to first fix, and thus use 30 seconds asa timeout threshold for fix operations. If a timeout then occurs withunsuccessful fix operations more than a threshold percentage of thetime, the variable location fix timeout threshold may be increased by anincremental value up to the maximum allowable value. Such operations maysave power resources at the expense of a lessened chance of a successfullocation fix in some instances.

In embodiments where the location state data comprises a location failindication, the system may operate by initiating capture of one or moreimages using a camera sensor of the wearable device in response to theinput signal and associating the one or more images with a previouslycached location value in response to the location fail indication. Othersystems may operate where location state data comprises a plurality oflocation parameters, the plurality of location parameters comprising atleast a time-to-fix value, an accuracy value, and one or more locationvalues. Some such embodiments operate by initiating capture of one ormore images using a camera sensor of the wearable device in response tothe input signal and associating the one or more images with the one ormore location values.

FIG. 7 illustrates aspects of wearable device location operations, inaccordance with some embodiments described herein. FIG. 7 particularlyillustrates aspects of a location manager responding to button pressinputs which initiate content capture at a wearable device during atimeline 702. FIG. 7 shows button press operation 710, 712, and 714.When an initial button press 710 is received, location manager systemsenter an acquisition mode 720. For example, location circuit 560 will beplaced in a location acquiring state in an embodiment which uses system500. When the location manager is in an acquisition mode, multiplebutton press inputs may be received. Subsequent button press operationsuch as button press 712 will not have any impact on the locationacquisition 720. In FIG. 7, location success 730 results in locationparameters determined at location success 730 being propagated back tocontent generated in association with particular button press inputs inoperation 740. Content generated in response to button press 710 is thusassigned location parameters from a location success 730 at operation744, and content generated in response to button press 712 is signedlocation parameters in operation 742. In some embodiments, the data fromlocation fix success 730 is used for a threshold period of time afterthe success. For example, if the button press occurs immediately afterlocation success 730, an additional location acquisition fix will not beused, but instead the location parameters from location success 730 willbe assigned to content generated in response if this button press occurswithin the threshold time. After this threshold time expires, subsequentbutton presses, such as button press 714, will result in an additionallocation fix operation in a subsequent location acquisition 721.

As illustrated, button press 714 initiates location acquisition 721.Location failure 732 results from location acquisition 721. Such afailure may be due to various causes such as access satellite locationinformation being blocked or obstructed, interference from other signalsources, or various other such mechanisms. When location failure 732occurs, operation 750 results in data generated in response to buttonpress 714 being assigned the most recent location parameters inoperation 752. In this case, the most recent parameters would be fromlocation success 730. Content generated in response to button press 714will thus be associated with location parameters from location success730 until a subsequent location update, if any, provides more accuratelocation data.

FIG. 8 illustrates an example method, in accordance with someembodiments described herein. FIG. 8 particularly describes a method 800for reducing a time to first fix in wearable device location operationenabled in accordance with privacy settings of a device. Similar tomethod 600 above, in some embodiments, method 800 is performed by awearable device such as glasses 31 in order to provide location dataassociated with content captured by a camera device 410 of the glasses31 and, in some embodiments, method 800 is embodied in computer-readableinstructions stored in a non-transitory storage of a wearable devicewhich then performs method 800 when the instructions are executed byprocessing circuitry (e.g. low-power, high-speed, and/or locationcircuitry 413 of a device).

Method 800 begins with operation 802 for storing, in a memory associatedwith a high-speed circuit 516 of a wearable device, time to first fixsupport data for a location circuit 560 of the wearable device, whereinthe location circuit 560 is separate from the high-speed circuit 516. Asdescribed above, such time to first fix support data may be satellitealmanac binary data. In some embodiments, this time to first fix supportdata may additionally or alternatively involve prior location fix data,country code data, timeout settings, or any other such data to assist alocation circuitry 413 in improving performance.

A location fix operation is then initiated at the wearable device inoperation 804 while operating the location circuit 560 of the wearabledevice in a location circuit low-power state comprising a real-timeclock and operating the high-speed circuit 516 of the wearable device ina high-speed circuit low-power state. Then in operation 806, in responseto initiation of the location fix operation, booting the high-speedcircuit 516 and the location circuit 560, and automaticallycommunicating the time to first fix support data in memory to thelocation circuit 560 on booting the high-speed circuit 516. Locationstate data at the location circuit 560 uses the time to first fixsupport data in operation 808.

Various such embodiments may further operate where the first locationfix is determined using a first set of accuracy parameters selected forincreased time to first fix operation, where the first location fix is atwo-dimensional location fix, or where the location circuit 560maintains the real-time clock without performing any locationcalculations while operating in the low-power state.

Similarly, various embodiments may operate by returning the high-speedcircuit 516 to the high-speed circuit low-power operating state afterthe time to first fix support data is communicated to the locationcircuit 560 and before generation of the location state data, andbooting the high-speed circuit 516 from the high-speed circuit low-powerstate after generation of the location state data. Similarly, varioussuch embodiments may operate by returning the location circuit 560 tothe low-power state when either a first location fix is determined or atimeout period expires, wherein the location state data comprises eitherthe first location fix or a timeout indicator.

FIG. 9 illustrates aspects of a wearable device location operations andlocation updates at a paired client device in accordance with someembodiments described herein. When a wearable device is paired with aclient device, privacy settings may be checked to determine if thewearable device is authorized to gather location data. In someembodiments, a default or non-paired privacy setting prevents capture oflocation data, and the wearable device only collects location data whenlocation fix operation are allowed in response to a location set valuestored in a non-volatile memory of the wearable device as part of apairing operation with the client device. In such embodiments, theauthorization to gather location data is provided by a user interactingwith an application on the client, and the settings on the wearabledevice are updated during pairing or other communications with theclient device.

As described above, rather than continuously updating locationinformation, in order to save battery resources, a wearable device willtake location 920, 922, and 924 irregularly depending on varioussettings and signal availability, while a companion device such as asmartphone is expected to take periodic location snapshots 910, 912, 914on a regular basis. While the wearable device may attempt to align theselocation 920, 922, 924 measurements with the capture of associatedcontent, for various reasons, these location measurements may notprovide accurate location data for certain content. In some embodiments,the wearable device assigns the most recent location parametersavailable at the wearable device when the content is captured. In otherembodiments, the wearable device assigns location parameters frommeasurements taken before or after captured of the content based onvarious criteria that indicate which measurement is more accurate forthe content. When the content is later downloaded from a wearable deviceto a paired client device such as a smart phone, the smartphone may havethe ability to associate more accurate location data with the contentgenerated by the wearable device from location snapshots 910, 912, 914.In some situations where the wearable device was not able to capturelocation data at or near the time of the content capture, the clientdevice can have location data that is more accurate.

For example, system 900 of FIG. 9 shows data capture times 930 and 934for content captured by the wearable device. Location snapshots 910,912, 914 are associated with location parameters captured by theassociated client device, and location updates 920, 922, 924 arelocation parameters generated by a wearable device that captured thecontent and is paired with a client device. When the wearable devicedownloads content to the client device, the content location can beanalyzed and may be updated with the closest location snapshot data fromthe client device if that location information is determined to be moreaccurate than the location information from the wearable device. In theexample of FIG. 9, content actually captured at the capture time 934 maybe associated with location measurement 922 made by the wearable device.When the content is downloaded to the client device, the client devicemay generate a timeline 902 to determine if the client device has moreaccurate location data to associate with the downloaded content. Thecontent captured at data capture time 930, for example, occurred closerin time to the location update 920 which occurred at the client device510 than to the time of location snapshot 910 or any previous locationmeasurement at the wearable device. The proximity of the later datacapture time 930 can thus be used to set a location from location update920 as associated with that content, rather than a location fromlocation snapshot 910. For content captured at capture time 934, sincethe time of location snapshot 914 is closer to data capture time 934then the time of location measurements 924 or 922, the location dataassociated with the content from data capture time 934 can be updated atthe client device to the location data from the client device atlocation snapshot 914.

In various embodiments, other state data associated with the wearabledevice or the client device can be used to determine which location datato associate with captured content. For example, location snapshot 914and location measurements 922, 924 may additionally be associated withmotion information. If location snapshot 914 indicates that the clientdevice was traveling at high-speed at the time of location update 934,and other data from the wearable device is available to indicate thatthe wearable device was not traveling at high-speed at data capture time934 or the time of location measurement 924, the client device maydetermine that location measurement 924 is more likely to provideaccurate location information for the content associated with datacapture time 934.

FIG. 10 illustrates an example method, in accordance with someembodiments described herein. FIG. 10 particularly describes a method1000 for reconciling location data associated with content to improvethe accuracy of the associated location data and reduce powerconsumption in associated wearable device operations. Method 1000 mayinvolve operations at a client device 510 paired with or otherwiseassociated with a wearable device such as wearable device 31 or anyother such client companion device 314 described herein. In someembodiments, method 1000 is embodied in computer-readable instructionsstored in a non-transitory storage of a client device 510 that performsmethod 1000 when the instructions are executed by processing circuitryof the client device 510.

Method 1000 begins with operation 1002 pairing, by processing circuitryof a client device 510, the client device 510 with a wearable device 31using a first application operating on the client device 510. Duringoperations of an application associated with a wearable device 31, orother such operations at the client device 510, operation 1004 involvescapturing a first client location fix at a first time using the firstapplication and location circuitry 413 of the client device 510.Limiting such operations for location to the operation of an applicationprotects user privacy and allows a user certainty over collection oflocation data associated with the wearable device 31 to privacy settingsassociated with the application. While such limitations provide lessaccurate location data, they improve user privacy as well as limitinglocation services based power usage.

Operation 1006 then involves receiving, at the client device 510, afirst piece of content from the wearable device 31, where the firstpiece of content is associated with a content capture time and firstwearable device location state data, where the first wearable devicelocation state data comprises location data and a location time, andwhere the location time is different than the content capture time. Asdescribed above, periodic location capture at the wearable device 31allows improved battery performance, but lowers location accuracy.Because of the pairing between the wearable device 31 and the clientdevice 510, the system may make assumptions about the proximity of thewearable device 31 and the client device 510. In some embodiments, statedata generated at the wearable device 31 and/or the client device 510may be used to validate this assumption, and to further improve accuracyestimates regarding the best location data to associate with contentcaptured using a wearable device 31. Operation 1008 then involvesprocessing the first piece of content to update an associated locationfor the first piece of content based on an estimated accuracy of thelocation data and the first client location fix.

In some embodiments, the estimated accuracy of the location data isbased on a time proximity of the content capture time to the locationtime and the first time. some such embodiments involve generating alocation flag when the time proximity is greater than a time threshold.Some such embodiments involve a velocity value as part of a clientlocation fix. In some such embodiments, the first piece of content isfurther associated with a first set of motion data, where the clientdevice 510 is associated with a second set of motion data comprising thevelocity value, and where the estimated accuracy is further based on thefirst set of motion data and the second set of motion data. State datamay further be involved in the estimated accuracy. For example, inertiasensor data or light sensor data may be provided and used to determine astate of a wearable device 31 at various times. Similar data may be usedto determine a state of a client device 510 when an applicationassociated with the wearable device 31 is running. Comparisons of statedata may be used to further estimate the accuracy of location data, orto otherwise determine the best location data to associate withparticular content. For example, if state data at a client device 510indicates “traveling” or “driving” and then indicates “stationary”,content captured after the state transitions to “stationary” may be morelikely to be associated with location data determined after the“stationary” state begins than during the “traveling” state, even if thetime difference between the content capture time and a locationdetermined during the “traveling” state is less than a time differencebetween the content capture time and a later location determined duringthe “stationary” state. Thus, if a client device 510 determines a firstlocation fix during a “driving” state, 5 minutes elapses, content iscaptured at a wearable device 31 at roughly the same time a statechanges from “driving” to “stationary” but no location fix successoccurs and then, 10 minutes elapses before another second location fixoccurs, the captured content may be associated with the second locationfix rather than the first location fix due to the state data.

In some embodiments, the first client location fix is initiated uponbooting of the application using the processing circuitry of the clientdevice 510. Some embodiments involve periodically performing clientlocation fix operations using the location circuitry 413 of the clientdevice 510 while the application is operating on the client device 510,and receiving, at the client device 510, a plurality of pieces ofcontent from the wearable device 31, where each piece of content of theplurality of pieces of content is associated with a correspondingcontent capture time and associated wearable device location state data.Then, for each piece of content, the method involves comparing theassociated wearable device location state data with the client locationfix operations to update an associated location. In some suchembodiments, the associated location for each piece of content isselected as a location of the client fix operations or the associatedwearable device location state data based on an associated timedifference with the corresponding content capture time for each piece ofcontent. Each piece of content is then stored in a memory of the clientdevice 510 with the associated location as determined based on theassociated time difference with the corresponding capture time.

As described above, various different operations are involved in methods600, 800, and 1000. Even though specific operations are described inspecific orders, other embodiments are possible with repeated operationsand intervening operations, and combinations of the various operationsof different methods are possible within other different embodiments. Itwill, therefore, be apparent that additional methods are possible usingthe described operations or similar operations within the possible scopeof the innovations described herein in order to improve the powerperformance of wearable devices 31 in association with location servicesprovided by the wearable device 31 and paired client devices 510.

FIG. 11 is a network diagram depicting a network system 1100 having aclient-server architecture configured for exchanging data over a network495, which may be used with wearable devices 31, according to someembodiments. For example, the network system 1100 may be a messagingsystem 330 where clients communicate and exchange data within thenetwork system 1100, where certain data is communicated to and fromwearable devices 31 described herein. The data may pertain to variousfunctions and aspects associated with the network system 1100 and itsusers. Although the network system 1100 is illustrated herein as havinga client-server architecture, other embodiments may include othernetwork architectures, such as peer-to-peer or distributed networkenvironments.

As shown in FIG. 11, the network system 1100 includes a messaging system1130. The messaging system 1130 is generally based on a three-tieredarchitecture, consisting of an interface layer 1124, an applicationlogic layer 1126, and a data layer 1128. As is understood by skilledartisans in the relevant computer and Internet-related arts, each moduleor engine shown in FIG. 11 represents a set of executable softwareinstructions and the corresponding hardware (e.g., memory and processor)for executing the instructions. In various embodiments, additionalfunctional modules and engines may be used with a messaging system 1130,such as that illustrated in FIG. 11, to facilitate additionalfunctionality that is not specifically described herein. Furthermore,the various functional modules and engines depicted in FIG. 11 mayreside on a single server computer, or may be distributed across severalserver computers in various arrangements. Moreover, although themessaging system 1130 is depicted in FIG. 11 as having a three-tieredarchitecture, the inventive subject matter is by no means limited tosuch an architecture.

As shown in FIG. 11, the interface layer 1124 consists of interfacemodules (e.g., a web server) 1140, which receive requests from variousclient-computing devices and servers, such as client devices 1110executing client applications 1112, and third-party servers 1120executing third-party applications 1122. In response to receivedrequests, the interface modules 1140 communicate appropriate responsesto requesting devices via a network 1104. For example, the interfacemodules 1140 can receive requests such as Hypertext Transfer Protocol(HTTP) requests, or other web-based application programming interface(API) requests.

The client devices 1110 can execute conventional web browserapplications or applications (also referred to as “apps”) that have beendeveloped for a specific platform to include any of a wide variety ofmobile computing devices and mobile-specific operating systems (e.g.,IOS™, ANDROID™, WINDOWS® PHONE). In an example, the client devices 1110are executing the client applications 1112. The client applications 1112can provide functionality to present information to a user 1106 andcommunicate via the network 1104 to exchange information with themessaging system 1130. Each of the client devices 1110 can comprise acomputing device that includes at least a display 411 and communicationcapabilities with the network 1104 to access the messaging system 1130.The client devices 1110 comprise, but are not limited to, remotedevices, work stations, computers 61, general-purpose computers,Internet appliances, hand-held devices, wireless devices, portabledevices, wearable computers, cellular or mobile phones, personal digitalassistants (PDAs), smart phones, tablets, ultrabooks, netbooks, laptops,desktops, multi-processor systems, microprocessor-based or programmableconsumer electronics, game consoles, set-top boxes, network PCs,mini-computers, and the like. The users 1106 can include a person, amachine, or other means of interacting with the client devices 1110. Insome embodiments, the users 106 interact with the messaging system 1130via the client devices 1110.

As shown in FIG. 11, the data layer 1128 has one or more databaseservers 1132 that facilitate access to information storage repositoriesor databases 1134. The databases 1134 are storage devices that storedata such as member profile data, social graph data (e.g., relationshipsbetween members of the messaging system 1130), and other user data.

An individual can register with the messaging system 1130 to become amember of the messaging system 1130. Once registered, a member can formsocial network relationships (e.g., friends, followers, or contacts) onthe messaging system 1130 and interact with a broad range ofapplications provided by the messaging system 1130.

The application logic layer 1126 includes various application logicmodules 1150, which, in conjunction with the interface modules 1140,generate various user interfaces with data retrieved from various datasources or data services in the data layer 1128. Individual applicationlogic modules 1150 may be used to implement the functionality associatedwith various applications, services, and features of the messagingsystem 1130. For instance, a messaging application can be implementedwith one or more of the application logic modules 1150. The messagingapplication provides a messaging mechanism for users 1106 of the clientdevices 1110 to send and receive messages that include text and mediacontent such as pictures and video. The client devices 1110 may accessand view the messages from the messaging application for a specifiedperiod of time (e.g., limited or unlimited). In an example, a particularmessage is accessible to a message recipient for a predefined duration(e.g., specified by a message sender) that begins when the particularmessage is first accessed. After the predefined duration elapses, themessage is deleted and is no longer accessible to the message recipient.Of course, other applications and services may be separately embodied intheir own application logic modules 1150.

Example Machine and Hardware Components

The example electronic devices described above may incorporate variouscomputer components or machine elements, at least some of which areconfigured for performing automated operations and/or for automaticallyproviding various functionalities. These include, for example, automatedimage data processing and image-capture parameter adjustment, asdescribed. The glasses 31 may thus provide an independent computersystem. Instead, or in addition, the glasses 31 may form part of adistributed system including one or more off-board processors and/ordevices.

FIG. 12 is a block diagram 1200 illustrating an architecture of software1202, which can be installed on any one or more of the devices describedabove. FIG. 12 is merely a non-limiting example of a softwarearchitecture, and it will be appreciated that many other architecturescan be implemented to facilitate the functionality described herein. Invarious embodiments, the software 1202 is implemented by hardware suchas a machine 1300 of FIG. 13 that includes processors 1310, memory 1330,and I/O components 1350. In this example architecture, the software 1202can be conceptualized as a stack of layers where each layer may providea particular functionality. For example, the software 1202 includeslayers such as an operating system 1204, libraries 1206, frameworks1208, and applications 1210. Operationally, the applications 1210 invokeapplication programming interface (API) calls 1212 through the softwarestack and receive messages 1214 in response to the API calls 1212,consistent with some embodiments. In various embodiments, any clientdevice 510, server computer of a server system 498, or other devicedescribed herein may operate using elements of the software 1202.Devices such as the camera controller 134 and other components of theportable electronic devices, as described earlier, may additionally beimplemented using aspects of the software 1202.

In various implementations, the operating system 1204 manages hardwareresources and provides common services. The operating system 1204includes, for example, a kernel 1212, services 1222, and drivers 1224.The kernel 1212 acts as an abstraction layer between the hardware andthe other software layers, consistent with some embodiments. Forexample, the kernel 1212 provides memory management, processormanagement (e.g., scheduling), component management, networking, andsecurity settings, among other functionality. The services 1222 canprovide other common services for the other software layers. The drivers1224 are responsible for controlling or interfacing with the underlyinghardware, according to some embodiments. For instance, the drivers 1224can include display drivers, camera drivers, BLUETOOTH® or BLUETOOTH®Low Energy drivers, flash memory drivers, serial communication drivers(e.g., USB drivers), WI-FI® drivers, audio drivers, power managementdrivers, and so forth. In certain implementations of a device such asthe camera controller 134 of the glasses 31, low-power circuitry 420 mayoperate using drivers 1224 that only contain BLUETOOTH® Low Energydrivers and basic logic for managing communications and controllingother devices, with other drivers operating with high-speed circuitry430.

In some embodiments, the libraries 1206 provide a low-level commoninfrastructure utilized by the applications 1210. The libraries 1206 caninclude system libraries 1230 (e.g., C standard library) that canprovide functions such as memory allocation functions, stringmanipulation functions, mathematic functions, and the like. In addition,the libraries 1206 can include API libraries 1232 such as medialibraries (e.g., libraries to support presentation and manipulation ofvarious media formats such as Moving Picture Experts Group-4 (MPEG4),Advanced Video Coding (H.264 or AVC), Moving Picture Experts GroupLayer-3 (MP3), Advanced Audio Coding (AAC), Adaptive Multi-Rate (AMR)audio codec, Joint Photographic Experts Group (JPEG or JPG), or PortableNetwork Graphics (PNG)), graphics libraries (e.g., an OpenGL frameworkused to render in two dimensions (2D) and three dimensions (3D) in agraphic context on a display 411), database libraries (e.g., SQLite toprovide various relational database functions), web libraries (e.g.,WebKit to provide web browsing functionality), and the like. Thelibraries 1206 can also include a wide variety of other libraries 1234to provide many other APIs to the applications 1210.

The frameworks 1208 provide a high-level common infrastructure that canbe utilized by the applications 1210, according to some embodiments. Forexample, the frameworks 1208 provide various graphic user interface(GUI) functions, high-level resource management, high-level locationservices, and so forth. The frameworks 1208 can provide a broad spectrumof other APIs that can be utilized by the applications 1210, some ofwhich may be specific to a particular operating system 1204 or platform.

In an example embodiment, the applications 1210 include a homeapplication 1250, a contacts application 1252, a browser application1254, a book reader application 1256, a location application 1258, amedia application 1260, a messaging application 1262, a game application1264, and a broad assortment of other applications such as a third-partyapplication 1266. According to some embodiments, the applications 1210are programs that execute functions defined in the programs. Variousprogramming languages can be employed to create one or more of theapplications 1210, structured in a variety of manners, such asobject-oriented programming languages (e.g., Objective-C, Java, or C++)or procedural programming languages (e.g., C or assembly language). In aspecific example, the third-party application 1266 (e.g., an applicationdeveloped using the ANDROID™ or IOS™ software development kit (SDK) byan entity other than the vendor of the particular platform) may bemobile software running on a mobile operating system such as IOS™,ANDROID™, WINDOWS® Phone, or other mobile operating systems. In thisexample, the third-party application 1266 can invoke the API calls 1212provided by the operating system 1204 to facilitate functionalitydescribed herein.

Embodiments described herein may particularly interact with anyapplication or application module which includes the use of locationoperations in a resource limited environment, such that it is notfeasible to continuously monitor and update a device location. Instead,a specific application 1210 may include location services as part of anapplication operating on a wearable device 31, or an application 1210may support location operations at a client device 1110 for locationservices provided in conjunction with a companion device or wearabledevice 31 with resource limitations.

Certain embodiments are described herein as including logic or a numberof components, modules, elements, or mechanisms. Such modules canconstitute either software modules (e.g., code embodied on amachine-readable medium or in a transmission signal) or hardwaremodules. A “hardware module” is a tangible unit capable of performingcertain operations and can be configured or arranged in a certainphysical manner. In various example embodiments, one or more computersystems (e.g., a standalone computer system, a client computer system,or a server computer system) or one or more hardware modules of acomputer system (e.g., a processor or a group of processors) isconfigured by software (e.g., an application or application portion) asa hardware module that operates to perform certain operations asdescribed herein.

In some embodiments, a hardware module is implemented mechanically,electronically, or any suitable combination thereof. For example, ahardware module can include dedicated circuitry or logic that ispermanently configured to perform certain operations. For example, ahardware module can be a special-purpose processor, such as afield-programmable gate array (FPGA) or an ASIC. A hardware module mayalso include programmable logic or circuitry that is temporarilyconfigured by software to perform certain operations. For example, ahardware module can include software encompassed within ageneral-purpose processor or other programmable processor 1310. It willbe appreciated that the decision to implement a hardware modulemechanically, in dedicated and permanently configured circuitry, or intemporarily configured circuitry (e.g., configured by software) can bedriven by cost and time considerations.

Accordingly, the phrase “hardware module” should be understood toencompass a tangible entity, be that an entity that is physicallyconstructed, permanently configured (e.g., hardwired), or temporarilyconfigured (e.g., programmed) to operate in a certain manner or toperform certain operations described herein. As used herein,“hardware-implemented module” refers to a hardware module. Consideringembodiments in which hardware modules are temporarily configured (e.g.,programmed), each of the hardware modules need not be configured orinstantiated at any one instance in time. For example, where a hardwaremodule comprises a general-purpose processor 1310 configured by softwareto become a special-purpose processor, the general-purpose processor1310 may be configured as respectively different special-purposeprocessors (e.g., comprising different hardware modules) at differenttimes. Software can accordingly configure a particular processor orprocessors 1310, for example, to constitute a particular hardware moduleat one instance of time and to constitute a different hardware module ata different instance of time.

Hardware modules can provide information to, and receive informationfrom, other hardware modules. Accordingly, the described hardwaremodules can be regarded as being communicatively coupled. Where multiplehardware modules exist contemporaneously, communications can be achievedthrough signal transmission (e.g., over appropriate circuits and buses)between or among two or more of the hardware modules. In embodiments inwhich multiple hardware modules are configured or instantiated atdifferent times, communications between such hardware modules may beachieved, for example, through the storage and retrieval of informationin memory structures to which the multiple hardware modules have access.For example, one hardware module performs an operation and stores theoutput of that operation in a memory device to which it iscommunicatively coupled. A further hardware module can then, at a latertime, access the memory device to retrieve and process the storedoutput. Hardware modules can also initiate communications with input oroutput devices, and can operate on a resource (e.g., a collection ofinformation).

The various operations of example methods described herein can beperformed, at least partially, by one or more processors 1310 that aretemporarily configured (e.g., by software) or permanently configured toperform the relevant operations. Whether temporarily or permanentlyconfigured, such processors 1310 constitute processor-implementedmodules that operate to perform one or more operations or functionsdescribed herein. As used herein, “processor-implemented module” refersto a hardware module implemented using one or more processors 1310.

Similarly, the methods described herein can be at least partiallyprocessor-implemented, with a particular processor or processors 1310being an example of hardware. For example, at least some of theoperations of a method can be performed by one or more processors 1310or processor-implemented modules. Moreover, the one or more processors1310 may also operate to support performance of the relevant operationsin a “cloud computing” environment or as a “software as a service”(SaaS). For example, at least some of the operations may be performed bya group of computers 61 (as examples of machines including processors1310), with these operations being accessible via a network 1104 (e.g.,the Internet) and via one or more appropriate interfaces (e.g., an API).In certain embodiments, for example, a client device 1110 may relay oroperate in communication with cloud computing systems, and may storemedia content such as images or videos generated by devices describedherein in a cloud environment.

The performance of certain of the operations may be distributed amongthe processors 1310, not only residing within a single machine, butdeployed across a number of machines. In some example embodiments, theprocessors 1310 or processor-implemented modules are located in a singlegeographic location (e.g., within a home environment, an officeenvironment, or a server farm). In other example embodiments, theprocessors 1310 or processor-implemented modules are distributed acrossa number of geographic locations.

FIG. 13 is a block diagram illustrating components of a machine 1300,according to some embodiments, able to read instructions from amachine-readable medium (e.g., a machine-readable storage medium) andperform any one or more of the methodologies discussed herein.Specifically, FIG. 13 shows a diagrammatic representation of the machine1300 in the example form of a computer system, within which instructions1316 (e.g., software, a program, an application, an applet, an app, orother executable code) for causing the machine 1300 to perform any oneor more of the methodologies discussed herein can be executed. Inalternative embodiments, the machine 1300 operates as a standalonedevice or can be coupled (e.g., networked) to other machines. In anetworked deployment, the machine 1300 may operate in the capacity of aserver machine or a client machine in a server-client networkenvironment, or as a peer machine in a peer-to-peer (or distributed)network environment. The machine 1300 can comprise, but not be limitedto, a server computer, a client computer, a personal computer (PC), atablet computer, a laptop computer, a netbook, a set-top box (STB), aPDA, an entertainment media system, a cellular telephone, a smart phone,a mobile device, a wearable device 31 (e.g., a smart watch), a smarthome device (e.g., a smart appliance), other smart devices, a webappliance, a network router, a network switch, a network bridge, or anymachine capable of executing the instructions 1316, sequentially orotherwise, that specify actions to be taken by the machine 1300.Further, while only a single machine 1300 is illustrated, the term“machine” shall also be taken to include a collection of machines 1300that individually or jointly execute the instructions 1316 to performany one or more of the methodologies discussed herein.

In various embodiments, the machine 1300 comprises processors 1310,memory 1330, and I/O components 1350, which can be configured tocommunicate with each other via a bus 1302. In an example embodiment,the processors 1310 (e.g., a central processing unit (CPU), a reducedinstruction set computing (RISC) processor, a complex instruction setcomputing (CISC) processor, a graphics processing unit (GPU), a digitalsignal processor (DSP), an ASIC, a radio-frequency integrated circuit(RFIC), another processor, or any suitable combination thereof) include,for example, a processor 1312 and a processor 1314 that may execute theinstructions 1316. The term “processor” is intended to includemulti-core processors 1310 that may comprise two or more independentprocessors 1312, 1314 (also referred to as “cores”) that can executeinstructions 1316 contemporaneously. Although FIG. 13 shows multipleprocessors 1310, the machine 1300 may include a single processor 1312with a single core, a single processor 1312 with multiple cores (e.g., amulti-core processor), multiple processors 1310 with a single core,multiple processors 1310 with multiple cores, or any combinationthereof.

The memory 1330 comprises a main memory 1332, a static memory 1334, anda storage unit 1336 accessible to the processors 1310 via the bus 1302,according to some embodiments. The storage unit 1336 can include amachine-readable medium on which are stored the instructions 1316embodying any one or more of the methodologies or functions describedherein. The instructions 1316 can also reside, completely or at leastpartially, within the main memory 1332, within the static memory 1334,within at least one of the processors 1310 (e.g., within the processor'scache memory), or any suitable combination thereof, during executionthereof by the machine 1300. Accordingly, in various embodiments, themain memory 1332, the static memory 1334, and the processors 1310 areconsidered machine-readable media.

As used herein, the term “memory” refers to a machine-readable mediumable to store data temporarily or permanently and may be taken toinclude, but not be limited to, random-access memory (RAM), read-onlymemory (ROM), buffer memory, flash memory, and cache memory. While themachine-readable medium is shown in an example embodiment to be a singlemedium, the term “machine-readable medium” should be taken to include asingle medium or multiple media (e.g., a centralized or distributeddatabase, or associated caches and servers) able to store theinstructions 1316. The term “machine-readable medium” shall also betaken to include any medium, or combination of multiple media, that iscapable of storing instructions (e.g., the instructions 1316) forexecution by a machine (e.g., the machine 1300), such that theinstructions 1316, when executed by one or more processors of themachine 1300 (e.g., the processors 1310), cause the machine 1300 toperform any one or more of the methodologies described herein.Accordingly, a “machine-readable medium” refers to a single storageapparatus or device, as well as “cloud-based” storage systems or storagenetworks that include multiple storage apparatus or devices. The term“machine-readable medium” shall accordingly be taken to include, but notbe limited to, one or more data repositories in the form of asolid-state memory (e.g., flash memory), an optical medium, a magneticmedium, other non-volatile memory (e.g., erasable programmable read-onlymemory (EPROM)), or any suitable combination thereof. The term“machine-readable medium” specifically excludes non-statutory signalsper se.

The I/O components 1350 include a wide variety of components to receiveinput, provide output, produce output, transmit information, exchangeinformation, capture measurements, and so on. In general, it will beappreciated that the I/O components 1350 can include many othercomponents that are not shown in FIG. 13. The I/O components 1350 aregrouped according to functionality merely for simplifying the followingdiscussion, and the grouping is in no way limiting. In various exampleembodiments, the I/O components 1350 include output components 1352 andinput components 1354. The output components 1352 include visualcomponents (e.g., a display 411 such as a plasma display panel (PDP), alight-emitting diode (LED) display, a liquid crystal display (LCD), aprojector, or a cathode ray tube (CRT)), acoustic components (e.g.,speakers), haptic components (e.g., a vibratory motor), other signalgenerators, and so forth. The input components 1354 include alphanumericinput components (e.g., a keyboard, a touch screen configured to receivealphanumeric input, a photo-optical keyboard, or other alphanumericinput components), point-based input components (e.g., a mouse, atouchpad, a trackball, a joystick, a motion sensor, or other pointinginstruments), tactile input components (e.g., a physical button, a touchscreen that provides location and force of touches or touch gestures, orother tactile input components), audio input components (e.g., amicrophone), and the like.

In some further example embodiments, the U/O components 1350 includebiometric components 1356, motion components 1358, environmentalcomponents 1360, or position components 1362, among a wide array ofother components. For example, the biometric components 1356 includecomponents to detect expressions (e.g., hand expressions, facialexpressions, vocal expressions, body gestures, or eye tracking), measurebiosignals (e.g., blood pressure, heart rate, body temperature,perspiration, or brain waves), identify a person (e.g., voiceidentification, retinal identification, facial identification,fingerprint identification, or electroencephalogram-basedidentification), and the like. The motion components 1358 includeacceleration sensor components (e.g., accelerometer), gravitation sensorcomponents, rotation sensor components (e.g., gyroscope), and so forth.The environmental components 1360 include, for example, illuminationsensor components (e.g., photometer), temperature sensor components(e.g., one or more thermometers that detect ambient temperature),humidity sensor components, pressure sensor components (e.g.,barometer), acoustic sensor components (e.g., one or more microphonesthat detect background noise), proximity sensor components (e.g.,infrared sensors that detect nearby objects), gas sensor components(e.g., machine olfaction detection sensors, gas detection sensors todetect concentrations of hazardous gases for safety or to measurepollutants in the atmosphere), or other components that may provideindications, measurements, or signals corresponding to a surroundingphysical environment. The position components 1362 include locationsensor components (e.g., a Global Positioning System (GPS) receivercomponent), altitude sensor components (e.g., altimeters or barometersthat detect air pressure from which altitude may be derived),orientation sensor components (e.g., magnetometers), and the like.

Communication can be implemented using a wide variety of technologies.The I/O components 1350 may include communication components 1364operable to couple the machine 1300 to a network 1380 or devices 1370via a coupling 1382 and a coupling 1372, respectively. For example, thecommunication components 1364 include a network interface component oranother suitable device to interface with the network 1380. In furtherexamples, the communication components 1364 include wired communicationcomponents, wireless communication components, cellular communicationcomponents, near field communication (NFC) components, BLUETOOTH®components (e.g., BLUETOOTH® Low Energy), WI-FI® components, and othercommunication components to provide communication via other modalities.The devices 1370 may be another machine 1300 or any of a wide variety ofperipheral devices (e.g., a peripheral device coupled via a USB).

Moreover, in some embodiments, the communication components 1364 detectidentifiers or include components operable to detect identifiers. Forexample, the communication components 1364 include radio frequencyidentification (RFID) tag reader components, NFC smart tag detectioncomponents, optical reader components (e.g., an optical sensor to detectone-dimensional bar codes such as a Universal Product Code (UPC) barcode, multi-dimensional bar codes such as a Quick Response (QR) code,Aztec Code, Data Matrix, Dataglyph, MaxiCode, PDF417, Ultra Code,Uniform Commercial Code Reduced Space Symbology (UCC RSS)-2D bar codes,and other optical codes), acoustic detection components (e.g.,microphones to identify tagged audio signals), or any suitablecombination thereof. In addition, a variety of information can bederived via the communication components 1364, such as location viaInternet Protocol (IP) geo-location, location via WI-FI® signaltriangulation, location via detecting an BLUETOOTH® or NFC beacon signalthat may indicate a particular location, and so forth.

In various example embodiments, one or more portions of the network 1380can be an ad hoc network, an intranet, an extranet, a virtual privatenetwork (VPN), a local area network (LAN), a wireless LAN (WLAN), a widearea network (WAN), a wireless WAN (WWAN), a metropolitan area network(MAN), the Internet, a portion of the Internet, a portion of the PublicSwitched Telephone Network (PSTN), a plain old telephone service (POTS)network, a cellular telephone network, a wireless network, a WI-FI®network, another type of network, or a combination of two or more suchnetworks. For example, the network 1380 or a portion of the network 1380may include a wireless or cellular network, and the coupling 1382 may bea Code Division Multiple Access (CDMA) connection, a Global System forMobile communications (GSM) connection, or another type of cellular orwireless coupling. In this example, the coupling 1382 can implement anyof a variety of types of data transfer technology, such as SingleCarrier Radio Transmission Technology (1×RTT), Evolution-Data Optimized(EVDO) technology, General Packet Radio Service (GPRS) technology,Enhanced Data rates for GSM Evolution (EDGE) technology, thirdGeneration Partnership Project (3GPP) including 3G, fourth generationwireless (4G) networks, Universal Mobile Telecommunications System(UMTS), High-Speed Packet Access (HSPA), Worldwide Interoperability forMicrowave Access (WiMAX), Long-Term Evolution (LTE) standard, othersdefined by various standard-setting organizations, other long-rangeprotocols, or other data-transfer technology.

In example embodiments, the instructions 1316 are transmitted orreceived over the network 1380 using a transmission medium via a networkinterface device (e.g., a network interface component included in thecommunication components 1364) and utilizing any one of a number ofwell-known transfer protocols (e.g., HTTP). Similarly, in other exampleembodiments, the instructions 1316 are transmitted or received using atransmission medium via the coupling 1372 (e.g., a peer-to-peercoupling) to the devices 1370. The term “transmission medium” shall betaken to include any intangible medium that is capable of storing,encoding, or carrying the instructions 1316 for execution by the machine1300, and includes digital or analog communications signals or otherintangible media to facilitate communication of such software.

Furthermore, the machine-readable medium is non-transitory (in otherwords, not having any transitory signals) in that it does not embody apropagating signal. However, labeling the machine-readable medium“non-transitory” should not be construed to mean that the medium isincapable of movement; the medium should be considered as beingtransportable from one physical location to another. Additionally, sincethe machine-readable medium is tangible, the medium may be considered tobe a machine-readable device.

Throughout this specification, plural instances may implementcomponents, operations, or structures described as a single instance.Although individual operations of one or more methods are illustratedand described as separate operations, one or more of the individualoperations may be performed concurrently, and nothing requires that theoperations be performed in the order illustrated. Structures andfunctionality presented as separate components in example configurationsmay be implemented as a combined structure or component. Similarly,structures and functionality presented as a single component may beimplemented as separate components. These and other variations,modifications, additions, and improvements fall within the scope of thesubject matter herein.

Although an overview of the inventive subject matter has been describedwith reference to specific example embodiments, various modificationsand changes may be made to these embodiments without departing from thebroader scope of embodiments of the present disclosure. Such embodimentsof the inventive subject matter may be referred to herein, individuallyor collectively, by the term “invention” merely for convenience andwithout intending to voluntarily limit the scope of this application toany single disclosure or inventive concept if more than one is, in fact,disclosed.

The embodiments illustrated herein are described in sufficient detail toenable those skilled in the art to practice the teachings disclosed.Other embodiments may be used and derived therefrom, such thatstructural and logical substitutions and changes may be made withoutdeparting from the scope of this disclosure. The Detailed Description,therefore, is not to be taken in a limiting sense, and the scope ofvarious embodiments is defined only by the appended claims, along withthe full range of equivalents to which such claims are entitled.

As used herein, the term “or” may be construed in either an inclusive orexclusive sense. Moreover, plural instances may be provided forresources, operations, or structures described herein as a singleinstance. Additionally, boundaries between various resources,operations, modules, engines, and data stores are somewhat arbitrary,and particular operations are illustrated in a context of specificillustrative configurations. Other allocations of functionality areenvisioned and may fall within a scope of various embodiments of thepresent disclosure. In general, structures and functionality presentedas separate resources in the example configurations may be implementedas a combined structure or resource. Similarly, structures andfunctionality presented as a single resource may be implemented asseparate resources. These and other variations, modifications,additions, and improvements fall within a scope of embodiments of thepresent disclosure as represented by the appended claims. Thespecification and drawings are, accordingly, to be regarded in anillustrative rather than a restrictive sense.

What is claimed is:
 1. A method comprising: receiving, at a higher-speedcircuit of an apparatus of a wearable device, via a first wirelessconnection, location support data; storing the location support data ina memory of the wearable device; in response to initiation of a locationoperation, transitioning, via a lower-power circuit, a location circuitof the apparatus from a lower-power state to a higher-power acquiringstate, the location circuit being separate from the higher-speed circuitand the lower-power circuit; generating, using the location circuit anda second wireless connection, location state data using the locationsupport data and information from a real-time clock, wherein thelocation circuit operates in the higher-power acquiring state.
 2. Themethod of claim 1 further comprising: receiving the location supportdata from a client device.
 3. The method of claim 1 wherein the locationdata is satellite almanac data and wherein the second wirelessconnection receives signals from a global navigation satellite system(GNSS).
 4. The method of claim 1 further comprising: communicating thelocation state data to the higher-speed circuit for storage in thememory; and returning the location circuit to the lower-power state. 5.The method of claim 4 further comprising: transitioning the higher-speedcircuit to a higher-speed circuit lower-power state.
 6. The method ofclaim 1 further comprising: before the receiving, in response to theinitiation of the location fix operation, transitioning the higher-speedcircuit to a higher-speed circuit higher-power state.
 7. The method ofclaim 1 wherein the location fix operation is initiated at the wearabledevice in response to receipt of an input signal at the lower-powercircuit, the input signal indicating a control of an image capturingdevice was selected.
 8. The method of claim 1 wherein the location statedata indicates a location fail indication.
 9. The method of claim 8further comprising: in response to a camera sensor of the wearabledevice capturing one or more images and the location data indicating thelocation fail indication, associating the one or more images withpreviously cached location state data.
 10. The method of claim 1 whereinthe location state data comprises a plurality of location parameters,the plurality of location parameters comprising an indication of a timewhen the location state data was determined and an indication of alocation.
 11. The method of claim 1 wherein the location operation isinitiated at the wearable device in response to a periodic locationtimer.
 12. The method of claim 11 wherein the location operation isfurther initiated at the wearable device in response to a determinationby a neural network running determining that the wearable device hasbeen in a worn state during for at least a threshold period of time. 13.The method of claim 1 wherein the location state data is generatedfurther based on data from an inertial measurement unit. generating,using the location circuit and a second wireless connection, locationstate data using the location support data and information from areal-time clock, wherein the location circuit operates in thehigher-power acquiring state.
 14. The method of claim 1 furthercomprising: sending, using the higher-speed circuit, via the firstwireless connection, the generated location state data.
 15. The methodof claim 14 further comprising: pairing, using the higher-speed circuit,via the first wireless connection, with a client device; and sending,the using the higher-speed circuit, via the first wireless connection,to the client device one or more images generated by the wearable deviceassociated with the location state data.
 16. The method of claim 1further comprising: moving, using the lower-power circuit, the locationsupport data to the location circuit.
 17. An apparatus of a wearabledevice comprising: a higher-speed circuit; a lower-power circuit coupledto the higher-speed circuit; location circuit coupled to the lower-powercircuit; a memory coupled to the higher-speed circuit; wherein thehigher-speed circuit is configured to: receive, via a first wirelessconnection, location support data; and store the location support datain the memory; wherein the lower-power circuit is configured to: respondto initiation of a location operation by transitioning the locationcircuit from a lower-power state to a higher-power acquiring state; and,wherein the location circuit is configured to: generate, using a secondwireless connection, location state data using the location support dataand information from a real-time clock, wherein the location circuitoperates in the higher-power acquiring state.
 18. The apparatus of claim17 wherein the location data is satellite almanac data and wherein thesecond wireless connection receives signals from a global navigationsatellite system (GNSS).
 19. A non-transitory computer-readable storagemedium that stores instructions for execution by circuitry of anapparatus for a wearable device, the instructions to configure thecircuitry to: receive, at a higher-speed circuit of the circuitry, via afirst wireless connection, location support data; store the locationsupport data in a memory of the wearable device; in response toinitiation of a location operation, transitioning, via a lower-powercircuit of the circuitry, a location circuit of the circuitry from alower-power state to a higher-power acquiring state, the locationcircuit being separate from the higher-speed circuit and the lower-powercircuit; generate, using the location circuit and a second wirelessconnection, location state data using the location support data andinformation from a real-time clock, wherein the location circuitoperates in the higher-power acquiring state.
 20. The non-transitorycomputer-readable storage medium of claim 19 wherein the location datais satellite almanac data and wherein the second wireless connectionreceives signals from a global navigation satellite system (GNSS).